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Finding the Fourth Proportional to 10,341.62, 15,526.20 and 5,415.20

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Solution

The fourth proportional to 10,341.62, 15,526.20 and 5,415.20 is: 8,130.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,341.62 : 15,526.20 = 5,415.20 : x
  2. Step 2: Convert to fraction form
    10,341.62/15,526.20 = 5,415.20/x
  3. Step 3: Cross multiply
    10,341.62x = 15,526.20 × 5,415.20
  4. Step 4: Simplify right side
    10,341.62x = 84,077,478.24
  5. Step 5: Solve for x
    x = 84,077,478.24/10,341.62
  6. Step 6: Final answer
    x = 8,130.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.